172472664 has 128 divisors (see below), whose sum is σ = 535127040. Its totient is φ = 45107712.

The previous prime is 172472639. The next prime is 172472687. The reversal of 172472664 is 466274271.

172472664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342637 + ... + 343139.

It is an arithmetic number, because the mean of its divisors is an integer number (4180680).

Almost surely, 2^172472664 is an apocalyptic number.

172472664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172472664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267563520).

172472664 is an abundant number, since it is smaller than the sum of its proper divisors (362654376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172472664 is a wasteful number, since it uses less digits than its factorization.

172472664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 685 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 172472664 is about 13132.8848315974. The cubic root of 172472664 is about 556.6387342210.

The spelling of 172472664 in words is "one hundred seventy-two million, four hundred seventy-two thousand, six hundred sixty-four".